I loved mine! He was such a cool little guy. One thing - they are SUPER timid and easily picked on. If you have any even slightly aggressive fish in the tank, consider a Citron as they're slightly larger.
I guess I could be thinking of the wrong Goby potentially...
Green Warpaint Clown Goby is the one I was thinking. The one you're referring to is different. I've never had one of those but I've seen them in the stores. Cool little guys and very curious from what I've seen.